3x+20-x=-10

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Solution for 3x+20-x=-10 equation: 



3x+20-x=-10

We move all terms to the left:

3x+20-x-(-10)=0

We add all the numbers together, and all the variables

2x+30=0

We move all terms containing x to the left, all other terms to the right

2x=-30

x=-30/2

x=-15

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